In Croatia, Ćojo families are Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Western Bosnia (Glamoc area). In Skucani in Western Bosnia nearly every inhabitant had the family name Ćojo.
Prevalence
Only a few people with faimily name Ćojo live in Croatia today, in two households only. They are located in one Croatian city only, in Zagreb (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.